“even tiny greenish stains can mean a pinhole leak”
Yeah, those sneaky leaks are the worst. I used to blame the pump every time too, but turns out a clogged filter was my main villain. Funny how the simplest fix is usually the one we overlook...
Yeah, those greenish stains are like little warning flags, but honestly, I’ve seen folks ignore them thinking it’s just old pipes or “normal.” Ever check for damp spots around fittings or under insulation? Sometimes the tiniest drip can cause bigger headaches down the road. I always double-check joints and valves, too—sometimes it’s not the pump or filter at all, just a loose connection. Makes you wonder how much water we lose to those pinhole leaks before we even notice...
Makes you wonder how much water we lose to those pinhole leaks before we even notice...
That’s a good point—those tiny leaks can add up over time, especially if you’re not actively looking for them. I’ve actually had a situation where I thought my pressure issue was the pump, but it turned out to be a slow drip behind a wall. Took ages to track down. Ever tried using a moisture meter to check behind drywall or insulation? Sometimes the damp spots aren’t obvious at all.
I’m curious, when you’re checking joints and valves, do you use any particular method or just go by feel? I’ve found that wrapping a bit of tissue around fittings can help spot the smallest leaks—if it gets damp, you know you’ve got a problem. Wondering if there’s a better trick out there…
I get what you’re saying about the tissue trick—super simple and it works for exposed joints, but I’ve always wondered if it’s really enough for those sneaky leaks that only show up under certain pressures or temps. Sometimes a joint will look bone dry until you run hot water through, then suddenly there’s a bead forming. Ever noticed that? I’ve had it happen with compression fittings especially.
About moisture meters, I’ve used them a few times but honestly, I’m not convinced they always catch everything behind dense insulation or thicker drywall. Maybe I’m just unlucky, but I’ve had cases where the meter read normal and then when we opened up the wall, there was mold and rot hiding out. Makes me wonder if infrared cameras are actually better for this kind of thing, even though they’re pricier.
I’ve found that wrapping a bit of tissue around fittings can help spot the smallest leaks—if it gets damp, you know you’ve got a problem.
Have you ever tried using a little dish soap mixed with water? Brush it on the suspect area and watch for bubbles—works like a charm on pressurized lines. It’s an old plumber’s trick but still one of my go-tos, especially when I’m dealing with gas lines too.
One thing I’d push back on is relying just on feel or visual checks. Some leaks are so slow they won’t show up right away, especially if the pipe is warm or in a drafty spot where evaporation happens fast. In those cases, leaving something absorbent (like your tissue idea) overnight can make all the difference.
Curious if anyone’s had luck with those smart leak detectors—they’re supposed to alert you to even tiny changes in moisture or flow rate. Seems like overkill for some folks, but maybe worth it if you’ve got an older house with sketchy plumbing.
Anyway, just my two cents—sometimes the “tried and true” methods miss stuff that only shows up when you least expect it.
Funny you mention the dish soap trick—I still carry a little bottle in my bag. Works for air and water, and it’s saved my bacon more than once when a pressure test looked fine but something felt off. I’ve had those “ghost leaks” too, especially with compression fittings after a boost in pressure. Sometimes you don’t see a thing until the system’s under full load and then, bam, there’s your drip. I’m a bit skeptical about moisture meters as well—had one tell me everything was dry, but the wall was basically compost inside. Haven’t tried smart leak detectors yet, but I can see the appeal if you’ve got a house that likes to keep secrets...